calculate window/monitor intersection
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										34
									
								
								dwm.c
									
									
									
									
									
								
							
							
						
						
									
										34
									
								
								dwm.c
									
									
									
									
									
								
							@@ -43,7 +43,8 @@
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/* macros */
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					/* macros */
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#define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
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					#define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
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#define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
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					#define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
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#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
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					#define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
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					                               * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
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#define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
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					#define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
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#define LENGTH(X)               (sizeof X / sizeof X[0])
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					#define LENGTH(X)               (sizeof X / sizeof X[0])
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#define MAX(A, B)               ((A) > (B) ? (A) : (B))
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					#define MAX(A, B)               ((A) > (B) ? (A) : (B))
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@@ -203,8 +204,8 @@ static void movemouse(const Arg *arg);
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static Client *nexttiled(Client *c);
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					static Client *nexttiled(Client *c);
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static void pop(Client *);
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					static void pop(Client *);
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static void propertynotify(XEvent *e);
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					static void propertynotify(XEvent *e);
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static Monitor *ptrtomon(int x, int y);
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static void quit(const Arg *arg);
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					static void quit(const Arg *arg);
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					static Monitor *recttomon(int x, int y, int w, int h);
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static void resize(Client *c, int x, int y, int w, int h, Bool interact);
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					static void resize(Client *c, int x, int y, int w, int h, Bool interact);
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static void resizeclient(Client *c, int x, int y, int w, int h);
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					static void resizeclient(Client *c, int x, int y, int w, int h);
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static void resizemouse(const Arg *arg);
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					static void resizemouse(const Arg *arg);
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@@ -1248,7 +1249,7 @@ movemouse(const Arg *arg) {
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		}
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							}
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	} while(ev.type != ButtonRelease);
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						} while(ev.type != ButtonRelease);
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	XUngrabPointer(dpy, CurrentTime);
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						XUngrabPointer(dpy, CurrentTime);
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	if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
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						if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
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		sendmon(c, m);
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							sendmon(c, m);
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		selmon = m;
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							selmon = m;
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		focus(NULL);
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							focus(NULL);
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@@ -1305,21 +1306,24 @@ propertynotify(XEvent *e) {
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	}
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						}
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}
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					}
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Monitor *
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ptrtomon(int x, int y) {
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	Monitor *m;
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	for(m = mons; m; m = m->next)
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		if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
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			return m;
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	return selmon;
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}
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void
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					void
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quit(const Arg *arg) {
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					quit(const Arg *arg) {
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	running = False;
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						running = False;
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}
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					}
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					Monitor *
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					recttomon(int x, int y, int w, int h) {
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						Monitor *m, *r = selmon;
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						int a, area = 0;
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						for(m = mons; m; m = m->next)
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							if((a = INTERSECT(x, y, w, h, m)) > area) {
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								area = a;
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								r = m;
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							}
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						return r;
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					}
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void
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					void
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resize(Client *c, int x, int y, int w, int h, Bool interact) {
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					resize(Client *c, int x, int y, int w, int h, Bool interact) {
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	if(applysizehints(c, &x, &y, &w, &h, interact))
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						if(applysizehints(c, &x, &y, &w, &h, interact))
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@@ -1383,7 +1387,7 @@ resizemouse(const Arg *arg) {
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	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
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						XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
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	XUngrabPointer(dpy, CurrentTime);
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						XUngrabPointer(dpy, CurrentTime);
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	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
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						while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
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	if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
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						if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
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		sendmon(c, m);
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							sendmon(c, m);
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		selmon = m;
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							selmon = m;
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		focus(NULL);
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							focus(NULL);
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@@ -2051,7 +2055,7 @@ wintomon(Window w) {
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	Monitor *m;
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						Monitor *m;
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	if(w == root && getrootptr(&x, &y))
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						if(w == root && getrootptr(&x, &y))
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		return ptrtomon(x, y);
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							return recttomon(x, y, 1, 1);
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	for(m = mons; m; m = m->next)
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						for(m = mons; m; m = m->next)
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		if(w == m->barwin)
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							if(w == m->barwin)
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			return m;
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								return m;
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